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2 years ago

Who described atoms as small spheres that could not be divided into anything smaller?

Chemistry

2 answers:

Tju [1.3M]2 years ago

8 0

Chemist John Dalton described atoms as small spheres that could not be divided into anything smaller.

DIA [1.3K]2 years ago

8 0

Answer:

the answer is Dalton

Explanation:

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Making solutions is an extremely important component to real-life chemistry. If you make 3.00 L of a solution using 90.0 g of so

kumpel [21]

Answer:

Final concentration of NaOH = 0.75 M

Explanation:

For $NaOH$ :-

Given mass = 90.0 g

Molar mass of NaOH = 39.997 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{90.0\ g}{39.997\ g/mol}$

$Moles\ of\ NaOH= 2.2502\ mol$

Molarity is defined as the number of moles present in one liter of the solution. It is basically the ratio of the moles of the solute to the liters of the solution.

The expression for the molarity, according to its definition is shown below as:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Where, Volume must be in Liter.

It is denoted by M.

Given, Volume = 3.00 L

So,

$Molarity=\frac{2.2502\ mol}{3.00\ L}=0.75\ M$

Final concentration of NaOH = 0.75 M

5 0

3 years ago

The size of camphor kept in store house gradually decrease in size after few а days?

zzz [600]

Answer:

Because it goes through the process of sublimation.

Explanation:

4 0

2 years ago

Name three sources of CO2

dangina [55]

Answer:

1.Respiration of animals and plants.

2.The burning of fossil fuels.

3.Bacteria decompose corpses.

4 0

3 years ago

Read 2 more answers

Based on what you’ve determined regarding one mole of sand and one mole of water, which statements must be correct? Select all t

Igoryamba

Answer:

-The mole is appropriate only for counting things that are very small.

-One mole is a very large number of something.

-A molecule of water is much smaller than a grain of sand.

Explanation:

8 0

2 years ago

What is the volume of an object with a density of 24.5 g/cm³ and a mass of 8.2 g?

vitfil [10]

Answer: The correct answer is option A.

Explanation:

To calculate the volume of an object, we use the formula:

$Density=\frac{\text{Mass of an object}}{\text{Volume of an object}}$

We are given:

Density of an object = $24.5g/cm^3$

Mass of an object = 8.2 grams

Volume of an object = ?

Putting values in above equation, we get:

$24.5g/cm^3=\frac{8.2g}{Volume}$

$Volume=0.33cm^3$

Hence, the correct answer is Option A.

6 0

3 years ago